1 /**
2  * Copyright (c) 2006-2019 LOVE Development Team
3  *
4  * This software is provided 'as-is', without any express or implied
5  * warranty.  In no event will the authors be held liable for any damages
6  * arising from the use of this software.
7  *
8  * Permission is granted to anyone to use this software for any purpose,
9  * including commercial applications, and to alter it and redistribute it
10  * freely, subject to the following restrictions:
11  *
12  * 1. The origin of this software must not be misrepresented; you must not
13  *    claim that you wrote the original software. If you use this software
14  *    in a product, an acknowledgment in the product documentation would be
15  *    appreciated but is not required.
16  * 2. Altered source versions must be plainly marked as such, and must not be
17  *    misrepresented as being the original software.
18  * 3. This notice may not be removed or altered from any source distribution.
19  **/
20 
21 #ifndef LOVE_FONT_IMAGE_RASTERIZER_H
22 #define LOVE_FONT_IMAGE_RASTERIZER_H
23 
24 // LOVE
25 #include "font/Rasterizer.h"
26 #include "image/ImageData.h"
27 #include "common/Color.h"
28 
29 #include <map>
30 
31 namespace love
32 {
33 namespace font
34 {
35 
36 /**
37  * Holds data for a font object.
38  **/
39 class ImageRasterizer : public Rasterizer
40 {
41 public:
42 	ImageRasterizer(love::image::ImageData *imageData, uint32 *glyphs, int numglyphs, int extraspacing, float dpiscale);
43 	virtual ~ImageRasterizer();
44 
45 	// Implement Rasterizer
46 	int getLineHeight() const override;
47 	GlyphData *getGlyphData(uint32 glyph) const override;
48 	int getGlyphCount() const override;
49 	bool hasGlyph(uint32 glyph) const override;
50 	DataType getDataType() const override;
51 
52 
53 private:
54 
55 	// Information about a glyph in the ImageData
56 	struct ImageGlyphData
57 	{
58 		int x;
59 		int width;
60 	};
61 
62 	// Load all the glyph positions into memory
63 	void load();
64 
65 	// The image data
66 	StrongRef<love::image::ImageData> imageData;
67 
68 	// The glyphs in the font
69 	uint32 *glyphs;
70 
71 	// Number of glyphs in the font
72 	int numglyphs;
73 
74 	int extraSpacing;
75 
76 	std::map<uint32, ImageGlyphData> imageGlyphs;
77 
78 	// Color used to identify glyph separation in the source ImageData
79 	Color32 spacer;
80 
81 }; // ImageRasterizer
82 
83 } // font
84 } // love
85 
86 #endif // LOVE_FONT_IMAGE_RASTERIZER_H
87